diff --git a/pkgs/by-name/md/mdbook-alerts/package.nix b/pkgs/by-name/md/mdbook-alerts/package.nix
index a36373848da1..085c191b92bc 100644
--- a/pkgs/by-name/md/mdbook-alerts/package.nix
+++ b/pkgs/by-name/md/mdbook-alerts/package.nix
@@ -7,7 +7,7 @@
   CoreServices ? darwin.apple_sdk.frameworks.CoreServices,
 }:
 let
-  version = "0.6.5";
+  version = "0.6.6";
 in
 rustPlatform.buildRustPackage {
   pname = "mdbook-alerts";
@@ -17,10 +17,10 @@ rustPlatform.buildRustPackage {
     owner = "lambdalisue";
     repo = "rs-mdbook-alerts";
     rev = "v${version}";
-    hash = "sha256-vlp1tjtdbaH1sax3HAN665fspqRheHZzu5u/QjEejHg=";
+    hash = "sha256-npPQU53l/VtTH23YYT6SOa11eUPNcA96al06S5HNNFE=";
   };
 
-  cargoHash = "sha256-nzVvktweqrow7P/I8DhDoVJNj1COCeEhx6HLY536hYE=";
+  cargoHash = "sha256-1wumxZoNr1QIit+KjgioG5WlSLSsWfcisChUEISoGQE=";
 
   buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ CoreServices ];